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Cards In This Set
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In the opening vignette of Ch. 6, Mrs. R suffered a stroke. What ability of her's was impaired?
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To recognize objects via the sense of vision
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Specifically, what are human visual systems specialize to detect?
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Electromagnetic radiation between 380 and 760 nm
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The attribute of what best corresponds to that of the dominant wavelength of light?
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Hue
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Hue is to wavelength
Saturation is to...
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Purity
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What term refers to the bony cavities that contain our eyes?
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Orbit
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Rods and cones are collectively referred to as what?
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Photoreceptors
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Relatively, how sensitive to light are rods?
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More sensitive than cones
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What explains our blind side in the visual field?
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There are no photoreceptors in the retina where the axons exit the eye
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Name the neuron which receives information from the photoreceptors and passes it on to the ganglion cells
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Bipolar
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If a light stimulus that contains an equal number of all wavelengths is presented to humans, what perception will humans report?
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White
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Within what are photo pigments located?
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Lamellae membrane
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The cell membrane of a retinal photoreceptor contains sodium channels that at rest are normally what and have a resting potential that is what compared to other neurons?
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Open; depolarized
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Where can action potentials first be observed in the visual system?
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Ganglion cells
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What is the size relationship of the inner layers of the lateral genetic unit nucleus in relation to the outer layer?
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The cell bodies of the inner two layers of the lateral genetic unit nucleus are larger than those of the outer for layers
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What pathways are important for the synchronization of behavioral activity to that of the light-dark cycle?
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Retino - hypothalamic
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